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Finding the Fourth Proportional to 90,505.35, 124,935.11 and 54,686.39

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Solution

The fourth proportional to 90,505.35, 124,935.11 and 54,686.39 is: 75,490.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,505.35 : 124,935.11 = 54,686.39 : x
  2. Step 2: Convert to fraction form
    90,505.35/124,935.11 = 54,686.39/x
  3. Step 3: Cross multiply
    90,505.35x = 124,935.11 × 54,686.39
  4. Step 4: Simplify right side
    90,505.35x = 6,832,250,159.88
  5. Step 5: Solve for x
    x = 6,832,250,159.88/90,505.35
  6. Step 6: Final answer
    x = 75,490.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.